Resumen - Soluciones
Solución 1
\[-5x + 5y = -55x \atop -4x + 2y = -42x\]
\[x = \boxed{10}, y = \boxed{-1}\]
\[x = \boxed{10}, y = \boxed{-1}\]
Solución 2
\[x^2 + 5y = -31 \atop -3x + 3y = -27\]
\[x = \boxed{2}, y = \boxed{-7}\]
\[x = \boxed{2}, y = \boxed{-7}\]
Solución 3
\[x^2 + 3y = 13 \atop 5x + 2y = -22\]
\[x = \boxed{-4}, y = \boxed{-1}\]
\[x = \boxed{-4}, y = \boxed{-1}\]
Solución 4
\[x^2 + 2y^2 = 57 \atop 3x - y = -19\]
\[x = \boxed{-5}, y = \boxed{4}\]
\[x = \boxed{-5}, y = \boxed{4}\]